7.5

CVE-2026-3622: tp-link systems inc. tl-wr841n v14 Out-of-bounds Read

CVSS: 7.5v3.1HighAnalyzed
Published 26-03-2026Last modified 27-03-2026
Open JSON

Vulnerability summary

CVE-2026-3622 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in tp-link systems inc. tl-wr841n v14. EPSS estimates a 0.70% chance of exploitation in the next 30 days, higher than 52.6% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.70%
0%100%
Low · +0.35 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-03-2026
    PublishedVulnerability first disclosed.
  2. 27-03-2026
    Last modifiedVulnerability information updated.

Description

The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service. Successful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition. This vulnerability affects TL-WR841N v14 < EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and < US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.70%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

+0.35 pp

From 0.36% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.70%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Tp-link1 product
Tp-link systems inc.1 product

2 vendors · 2 products

References

3 links